Plastic Welding Products include both the raw stock (Sheets & Welding Rods), as well as, the welding equipment. Professional Plastics offers a full line of both Seeyle brand welders and Wegener brand welding products. These products are commonly used for Hot Air/ Hot Gas Welding. This technique utilizes a specially designed heat gun (hot air welder) which produces a jet of hot air that softens both the parts to be joined and a plastic filler rod, all of which must be of the same or a very similar plastic. Welding PVC to acrylic is an exception to this rule. Hot air/gas welding is a common fabrication technique for manufacturing smaller items such as chemical tanks, water tanks (black, grey, fresh & ballast), heat exchangers, and plumbing fittings. Plastics are used for manufacturing semiconductor wet benches, chemical process tanks, clean room cabinets, medical facility chassis, transport assemblies, etc.